Ground-working implement.



C. M. TILBURY.

GROUND WORKING IMPLEMENT.

APPLICATION men $PT. I3. 1918.

1,302,883. Patented May 6, 1919.

3 SHEETS-SHEET I- c. M. TILBURY. GROUND WORKING IMPLEMENT.

I APPLICATION FILED SEFT.'13| I918. 1,302,883.

Patented May 6, 1919.

3 SHEETS-SHEET 2 mr Mom"; m-rnu ca, Puma-1.1mm wAsmmmnl, n c.

yerizin i Specification}! Appmmfibn illeglle p I I oirhas'wdo with e e v nq working implements lmplments fori break- 13f fihe earth ppepam- 'tivation. More pari ,thearthwhichhe s g*communities." f "the inventibn is' to ab r implement of such con that it will pulverize the soil 1 to a v distance belqw the surface may be Ntajking] the relatively large ieees brea 'n ,bhem "and fina k ontb thqsurfece.

, 1 h r d g roadeend -"dthebl 'surfaees wh' h desired not p ul'verize; i theieby making iblej hinefromgpointj 3 but perfo; the

led descript "theffeatures 0f he" and 1 1 111181;; cent 1' tionally supporting the blades and giving them longer points of bearing and support in their sliding movements.

In the construction illustrated, there are shown four sets of blades located respectively at four positions along the length of the bearing rod 15, but, manifestly, the number of sets may be increased or decreased at the pleasure of the designer. Furthermore, in the construction illustrated, there are provided four blades in each set,

1 thereby giving a' relatively small angular clearance ordistance between each pair of blades; The number of blades. in each may likewise be varied at the will of the designer. 'Means are provided for-moving the blades in and Out at the proper intervals during the rotation of the cylinder member, and, in the construction illustrated, the springs 24, work.ing between, the blades and the cylinder member. normally reject ,the blades into their full extended position, Stops 25 on the blades serve to limitthe' amount of the outward throw.

During the operation of the machi he cylinder 10 rotates in the direction .shown' by the arrow in Fig. v2, and thevarious blades are successively driven into the soil. In the ordinary operation of such an arrangement ashas been so far described-the blades would be forced down, into the soil and then drawn back or lifted out of the soil as the cylinder traveled over the surface of the ground, and the amount of the re: sulting breaking or pulverizing action would bedependent only uponthe relatively small amount of agitation secured by such movements. I have, in the present case, however, made special provision for taking the soil so broken in an ordinary manner and delivering it to a pulverizing device whereby it is efliciently and (thoroughly pulverized and then afterward delivered back onto the ground. This means includes an arcuate guide 26 supported in its side portions by the arms. 27 and 28 which-ware swingingly mounted on the hubs 13 and 14 by means of the journals 29mm 30. The lower edge 31 of the arcuate g ide-26.11101:- mally stands substantially below the axle or bearing bar :15 and at a distance beneath the,

surface ofthe soil substantially equal to the depth to which the pulverizing action is-to be carried out. The upper edge. 32 of said guide extends some distance vabove the sur-i face of the soil, so that the material dew 1 livered up over said upper edge can be there:

after taken into the pulverizing. device for pulverizing'treatment. As a convenient con struction, the arcuate guide is illustrated as being concentric with the cylinder 10 and with hearing bar 15, and as clearingkthelsunface of the cylinder 10 by a distance substantially equal to the amount of projection of the blades 20 beyond the ylinder. By

this arrangement the material broken in a preliminary manner by the blades will be moved up over the surface of the guide by the movement of the blades and delivered over the upper edge 32.

In order to insure a more perfect delivcry of the material from the blades, it is desirable to provide means for drawing the blades inwardly as they pass upwardly awayfrqm the upper edge 32, thus forcibly removing from the blades any soil which might otherwise tend to stick to them. Such withdrawing means I have provided in the present case, and the same takes the formof a cam-shaped bar 33 for each set of blades, each blade having on its inner end a roller 34 adapted to engage :said cam-shaped bar n be draw w r y he by at h proper time in the rotation of the cylinder. Each cam-shaped bar is mounted in a stationary manner on .the rod or hearing bar '15, and for this purpose theangular or squared cross section of said bar presents a simple and efficient manner of non-rotatable support for the cam bars.

After the materi l y from the arcuate guide, it may be re,- de posited directly upon the surface of the ground or Subjected to further pulverizing treatment, if that be necessary I ,wi therefore, describe a ulverizing' device which operates in c0n]unction with the Inechanismsso far explained. This pulverizing device takes the form of a cylinder member 35 extending across the rear portion of the frame andcarried by an axle 36 which is rotatably jounnaled in the frame at the points 37 and 38. The cylinder 35 is normally driven or rotated by the rotation of the cylinder 10. For this purpose, the hubs 13 .and 14 carry the sprockets 39 and 40, and similar-sprockets 41 and 42 are arried by the shaft 36. Theohains 43 and 44 join together the respective pairs of sprockets in a driving vmanner. Ordinarily, the pulverizi-ng cylinder will rotate at a somewhat greater speedthan the cylinder 10, and this increased speed is readily secured by properly proportioning the sprockets,-mak ing the sprockets 41 and 42 smaller than, the driving s rockets 39and 4 The ,cy inder 35 has a roughened or corrugated surface and, in the construction illustrated, the corrugationszextend trans.- versely as well as annular-l around said cylinder. Beneath vthe cylin er 35, is a table or plate 45 which slants toward the rearand is supported relatively close tothe lower portion of the cylinder 35 byimcans of'the-bars 46 and 47 This table 45'also has itssurface' roughened or corrugated, so as tebetter coha e n eliv r d fi th-shap d ei es or thfilike lpen"jogging the portion 1&8" up i 0? er material sup; lllfbe crowded or forced ta; T nd driven between ctii ely; and ets 55 which 'spectively,

xpleihed that Wheil surfaces, such as roadto throv thephledes 0'; f

, v (lite ralse the that the machine can travel hdut operating upon its surface. iinlection it may also be mentioned e Ordinary operation of the maailer wheel 56 supports the rear the; frame at the desired elevation ground. I'rrorder to disable the:

"0 held' themzlecked at their innertionsg. Iyheve provided the cam} {mom enthe squared portion of the beer- I ngrod l5f Each of these cam plates has aculer cam surface 61 on its under face 1 m eptedfto engage and'fretanin attheinner- 0st osition th'ejrollers 34 of its corre- "spondin blades." That portion of each of I said cam blocks .adj ecen't to the corresponding cam block 33 1 is cut away, as w ll be readily understood from an examination of 2; Uponmoving all of the cam blocks ahdf60' 'Wiseinto the position where the lwillcooperete with the rollers 3 3,they gill take" holdf seid rollers and.

retain them;- atithe innermost position dureping the forward travel of the machine,

hereby "holding the blades inwardly! and in r operative position; When) the blades to b thrown into commission, it isenly" "to mevetheeam blocks 57,58, 59 ewise the necessary amount.

i fifl isslidingly mounted within the earingrod 15end'isc0nnected totthe 'vari- Us'cemblocksbypihsfil; extendinglthrough P k endj'means for causing t ts fm the bearing, rodb The end poro veniently located ads at 66, such; operative eflected through the mei nk 67, link 68 and 'bell The arcuate' -guide' 26 can be raised (1 leweredfiunder the controL of the perato by rh eenspof a; lever 70 locetedl at e onvenient to the seat 66, seidlever "a vshaft -71;Which: carriesthe t 721 and 73 respectively wseidf connected to corresponding 5 by means of theliuks ing 1 the enioun of prc e yond the roller, andpulvteri'zi hind ltherollerl'n a" 10. e rby an meunt substant ell' equ to the normal amou'rit yef projectienz 1 blades beyond the rbller, a lpulverizing i r p twe fth in coiiperati With respect to 'said' pulvemzing. table meufnted imposition to, reoe delivered over the arcuatefguid j ournhled in the A rotating the pulVeijiZln roller simulte ously with the retetioli 0 the first mention roller, means und Jrthe control of the 0per ator for reteini llbfthe blade tracted position 'w respect to enduheans under th centre] of tor'for ettimes swinging the arena upwardly on its pivbtal support tielly as'described. "1

I 2. Aground working implement; 0r

p'urpese' specified, comprising in'l cc'mbm tion a ground "roller, a plurality of rafdi bladesslidebly mounted therein meens no melly projectingseicl blades beyoridjthe sur- "face of the roller, enereuete guide'mounted concentric with "respect to said roller end evergthe upper ed t9 I retete" simultehe tmned;

I cembinatien a I rality 0f bladesnslideblyum means normallyproj yond the surface 0 guide hormally stend tiou beneath the i t g s antially mu to ate 7 on of the ible es be- I ceiving material delivered over the ercuate uide b ta tial a scribfi f1. A gmund Working implement com- Rn si in mbi a ian wallet, 3 n n li y of bla es movehlyinpunted, therein, means for projecting the said blades beyond the surface of the roller, an arcuate n01- mall standing with its lower pertion :beneat the roller and. Cleanin the roller by an amount substantially equal 19 theiamountof sntojeetion of the blades beybndvthe roller, an puhrei izing means in cembin tion; with the roller and arcuate guide and receiving material delivered over the arcuate guide, b t nt y asdescrihed, 5". A grounii working implement vcom- 9 2 9!!! #1 ve -mt my ci ema 9 prising in combination a roller, a plurality qf blades s1' ah y momted there n, m a s caus ng eggh of said blegieg t9 project 39m 21w fi l-ni of the lle n he l w Pe .ti'onflof its travel and to beT'dmwn back FS'WE P- h rdller by n em t s bstan: v

1 m" sank: eslnums the 'ce mlwaw q; lat nt! 

